Katy Perry was the most played artist on radio of 2011, according to Nielsen BDS.
Perry clocked up 1,457,000 detections on US radio last year placing her slightly in front of Bruno Mars with 1,440,000 plays.
'E.T.' was her most played song with 526,000 detections, followed by 'Firework' with 509,000 plays and 'Last Friday Night (TGIF)' 450,000.
Adele 'Rolling In The Deep' was the most played song on US radio with 658,000 detections.
The Top 10 Artists by Airplay were:
1. Katy Perry – 1,457,000
2. Bruno Mars – 1,440,000
3. Lady Gaga – 1,261,000
4. P!nk – 1,182,000
5. Rihanna – 1,127,000
6. Adele – 1,118,000
7. Taylor Swift – 1,094,000
8. Black Eyed Peas – 955,000
9. Lady Antebellum – 916,000
10. Britney Spears – 900,000
The Top 10 Most played songs were:
1. Adele 'Rolling In The Deep' 658,000
2. Pitbull – 'Give Me Everything' 620,000
3. LMFAO – 'Party Rock Anthem' 571,000
4. Katy Perry – 'ET' 526,000
5. Katy Perry – 'Firework' 509,000
6. P!nk – 'Fucking Perfect' 501,000
7. Bruno Mars – 'Grenade' 483,000
8. Maroon 5 – 'Moves Like Jagger' 465,000
9. Black Eyed Peas – 'Just Can't Get Enough' 457,000
10. Katy Perry – 'Last Friday Night TGIF)' 450,000